Date: Thu, 12 Feb 1998 12:24:54 +1100 (EDT) From: Darren Reed <avalon@coombs.anu.edu.au> To: sbabkin@dcn.att.com Cc: jfieber@indiana.edu, jbryant@unix.tfs.net, freebsd-hackers@FreeBSD.ORG Subject: Re: Sony SDT-1700 Tape won't write 4Gig Message-ID: <199802120126.RAA01163@hub.freebsd.org> In-Reply-To: <C50B6FBA632FD111AF0F0000C0AD71EE413291@dcn71.dcn.att.com> from "sbabkin@dcn.att.com" at Feb 11, 98 03:53:33 pm
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In some mail from sbabkin@dcn.att.com, sie said: > > > > ---------- > > > On Wed, 11 Feb 1998, Ustimenko Semen wrote: > > > > > > > I have got Sony SDT-1700 device, but i can't get it work:( > > > > It should write 4 Gig on one > > > > DDS Cassete. But under 2.2.5-RELEASE write to /dev/rst0 fail > > > > on near 1 Gig. > > > > > > 4G with compression or without? Are you using a DDS-1 or DDS-2 > > tape? > > > > good point! > > > > Type Length Capacity > > -------------------------------------------------------- > > DDS - 60M == 1.3G native > > DDS - 90M == 2.0G native, 4.0G using compression > > > I believe that 90M DDS-2 must be 2.0G native (and HP specified it > in documentation on its DDS-2 drives) while 90M DDS is 1.3G native. > I had opportunity to discover it as failed backup after ICL > changed by warranty a failed DDS-2 drive to DDS drive. No, DDS does give 2.0G for 90m tapes, however, not all DDS drives support 90m tapes. DDS-2 drives should give 1.3G 60m, 2.0G 90m and 4.0G 120m (without compression). To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe hackers" in the body of the message
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